Software that keeps running.

Endurance Applications is an independent software business based in New York, United States. We design, build and operate focused apps for the web and iPhone, and keep each one maintained after launch.

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Quantum Notary on the web, since 2026
Quantum Notary on iPhone, in development

Each line is one of our products, starting from the year it launched.

Applications

Quantum Notary

File fingerprinting and blockchain timestamping.

Records a SHA-256 fingerprint of a file on Base, so anyone can later check that a copy matches the original and existed by a given date.

Web: Available at quantumnotary.app
iPhone: In development

Visit quantumnotary.app Product details

The company

Business name: Endurance Applications
Business type: Sole proprietorship
Based in: New York, United States
Contact: info@enduranceapplications.com

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